40591912 has 8 divisors (see below), whose sum is σ = 76109850. Its totient is φ = 20295952.

The previous prime is 40591877. The next prime is 40591919. The reversal of 40591912 is 21919504.

It can be written as a sum of positive squares in only one way, i.e., 36072036 + 4519876 = 6006^2 + 2126^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (40591919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2536987 + ... + 2537002.

Almost surely, 2^40591912 is an apocalyptic number.

It is an amenable number.

40591912 is a deficient number, since it is larger than the sum of its proper divisors (35517938).

40591912 is a wasteful number, since it uses less digits than its factorization.

40591912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5073995 (or 5073991 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 40591912 is about 6371.1782269844. The cubic root of 40591912 is about 343.6738616164.

The spelling of 40591912 in words is "forty million, five hundred ninety-one thousand, nine hundred twelve".